i830_context.c revision d3491e775fb07f891463b2185d74bbad62f3ed24 
1/**************************************************************************
2 *
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28#include "i830_context.h"
29#include "main/imports.h"
30#include "tnl/tnl.h"
31#include "tnl/t_vertex.h"
32#include "tnl/t_context.h"
33#include "tnl/t_pipeline.h"
34#include "intel_span.h"
35#include "intel_tris.h"
36
37/***************************************
38 * Mesa's Driver Functions
39 ***************************************/
40
41static void
42i830InitDriverFunctions(struct dd_function_table *functions)
43{
44   intelInitDriverFunctions(functions);
45   i830InitStateFuncs(functions);
46}
47
48extern const struct tnl_pipeline_stage *intel_pipeline[];
49
50GLboolean
51i830CreateContext(const struct gl_config * mesaVis,
52                  __DRIcontext * driContextPriv,
53                  void *sharedContextPrivate)
54{
55   struct dd_function_table functions;
56   struct i830_context *i830 = CALLOC_STRUCT(i830_context);
57   struct intel_context *intel = &i830->intel;
58   GLcontext *ctx = &intel->ctx;
59   if (!i830)
60      return GL_FALSE;
61
62   i830InitVtbl(i830);
63   i830InitDriverFunctions(&functions);
64
65   if (!intelInitContext(intel, __DRI_API_OPENGL, mesaVis, driContextPriv,
66                         sharedContextPrivate, &functions)) {
67      FREE(i830);
68      return GL_FALSE;
69   }
70
71   _math_matrix_ctr(&intel->ViewportMatrix);
72
73   /* Initialize swrast, tnl driver tables: */
74   intelInitSpanFuncs(ctx);
75   intelInitTriFuncs(ctx);
76
77   /* Install the customized pipeline: */
78   _tnl_destroy_pipeline(ctx);
79   _tnl_install_pipeline(ctx, intel_pipeline);
80
81   if (intel->no_rast)
82      FALLBACK(intel, INTEL_FALLBACK_USER, 1);
83
84   intel->ctx.Const.MaxTextureUnits = I830_TEX_UNITS;
85   intel->ctx.Const.MaxTextureImageUnits = I830_TEX_UNITS;
86   intel->ctx.Const.MaxTextureCoordUnits = I830_TEX_UNITS;
87
88   /* Advertise the full hardware capabilities.  The new memory
89    * manager should cope much better with overload situations:
90    */
91   ctx->Const.MaxTextureLevels = 12;
92   ctx->Const.Max3DTextureLevels = 9;
93   ctx->Const.MaxCubeTextureLevels = 11;
94   ctx->Const.MaxTextureRectSize = (1 << 11);
95   ctx->Const.MaxTextureUnits = I830_TEX_UNITS;
96
97   ctx->Const.MaxTextureMaxAnisotropy = 2.0;
98
99   ctx->Const.MaxDrawBuffers = 1;
100
101   _tnl_init_vertices(ctx, ctx->Const.MaxArrayLockSize + 12,
102                      18 * sizeof(GLfloat));
103
104   intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
105
106   i830InitState(i830);
107
108   _tnl_allow_vertex_fog(ctx, 1);
109   _tnl_allow_pixel_fog(ctx, 0);
110
111   return GL_TRUE;
112}
113